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Post-concussion syndrome (PCS), also known as persisting symptoms after concussion, is a set of symptoms that may continue for weeks, months, or years after a concussion. PCS is medically classified as a mild traumatic brain injury (TBI).
In post-concussion syndrome, symptoms do not resolve for weeks, months, or years after a concussion, and may occasionally be permanent. [122] About 10% to 20% of people have persisting concussion symptoms for more than a month. [ 118 ]
Late symptoms can occur days to weeks after the initial injury, although headaches and dizziness can persist well into the "late stage" as well. [7] RPQ-3 symptoms are regarded as the more "physical" symptoms, whereas the RPQ-13 set of symptoms are considered to have a more significant impact on psychic and social function.
The brain may show signs of concussion for months or years after the ... Detailed brain maps created with the scans showed that athletes with prior concussions had a 10 to 20 percent drop in brain ...
But the recovery time can vary. Up to about 1/3 of people experience persisting symptoms after concussion (PHAC) or persistent post concussion symptoms (PPAC), defined as symptoms that last more than 4 weeks. [5] [6] [7] After an injury, concussion symptoms can begin immediately or be and delayed by 1-2 days at most. [8]
There were more than 492,000 traumatic brain injuries, mostly mild concussions, in the military between 2000 and 2023, the most recent year with available data, Defense Department statistics show.
Second-impact syndrome (SIS) occurs when the brain swells rapidly, and catastrophically, after a person has a second concussion before symptoms from an earlier one have subsided. This second blow may occur minutes, days, or weeks after an initial concussion, [1] and even the mildest grade of concussion can lead to second impact syndrome. [2]
Reported concussion rates have dropped slightly in the NFL over the past few years, but held relatively steady from the 2022-2023 to 2023-2024 season. The NFL reported a 52% drop in concussions ...